Aquatic animal(sponge) that feeds by sifting small food particles from the water.
Choanocytes
feeded cell found in sponges.
Polyps
The sessile variant for the cnidarian body plan
Cnidocytes
Specialized cell unique to Cnidaira.
Planarian
free living flatworm found in unpollinated ponds and streams.
Mantle
one of the 3 main parts of a moluse; a fold of tissue that drapes over the molusc's vacuole.
Radula
straplike organ used by many mollusc's during feeding.
open circulatory system
circulartory system which fluid called hemolymph bathes the tissues and organs directly and ther is no distintion between the circulating fluid and the interstitial fluid.
Chelicera
one of a pair of clawlike feeding appendages characteristics of cheliceriforms.
Metamorphosis
development transformation that turns an animal larva into either an adult like stage that is not yet sexually mature.
notochord
flexible rod made of packed mesodermal cells that runs along the anterior-posterior axis of a chordate in the dorsal part of the body.